Wood-chipper.



I PATENTED APR. 21, 1908- A. M. POWELL. WOOD CHIPPER. APPLICATION FILED JULY 25, 1907.

]N VENTOJ flZBEJE M POWELL gwjj MW 777% wrnw i for chipping facility, as we in to an adjusting screw.

UNITED STATES PATENT OFFICE.

ALBERT M. POWELL, OF CAFTHAGE, NEW YORK, ASSIGNOR. TO CARTHAGE MACHINE 1 COMPANY, OF OARTHAGE, NEW YORK.

WOOD-CHIPPER.

Specification of Letters Patent...

Patented April 21, 1908.

Application filed July 25, 1907. Serial N 0. 385,471.

To all whom it may concern:

Be it known that I, ALBERT M. POWELL,

'of Cartha e, in the county of Jefferson and ew York, have invented certain State of I new and useful Improvements in Wood- .Chippers; and I do hereby declare thatthe The 0 ject of my invention'is top'rovide certain improvements in wood chippers,

wherein provision is made for adjusting, re-

moving and re lacing the cutting plate with ll as holding it securely. The machine to which my im rovements appertain is such a one as is usua y provided wood in the first stages of process of making paper pulp therefrom. I

Figure 1 shows a partial side elevation of a machine embodying the features ofmy construction, certain parts being broken'out to exhibit the internal construction. Fig. 2 is an enlarged detail of the chipper feeding spout in perspective. Fig. 3 is an enlarged detail in sectlon of the spout and its parts, together with portions of the revolving disk andcutter or knife. Fig. 4 is a detail relateferring to the'reference letters and figures in a more particular description, 1 indicates a revolub e disk mounted on a shaft 2 'to be revolved and inclosed in a casing 3 as to its upper portion, the lower portion ordi- 'narily running in a pit which is not shown. The revolving diskl is provided with one or more openings 1", in which is set a knife or cutter 4 projecting through and beyond the face of the disk a sufficient distance to regulate the thickness of the chip to be cut. The feedin spout 5 is mounted on the frame at a point etween the center and the periphery, as appears in Fig. 1. The blocks of wood to be out are fed into the spout through the opening 6, which opening may have a surface of teeth-like corrugations, as shown at 7, to assist in preventing the blocks receding from the knife while being cut, and may be pro vided with internal plates 8 and 9 arranged at the points of greatest wear. The lower delivery end of the spout 5 isarrangedin clearly shown in Fig. 3, so that the blocks are exposed to the knife 4 as it passes the spout in each revolution of the dis At the base of the spout'there is provided a slotted opening 10 which receives "the cutting plate 10. This plate 10 is preferably of steel to better withstand thesevere strains to which it is subjected, and lies flat on the bed 5", which constitutes the bottom of the slot receiving the plate. For adjusting the plate 10'toWards and from the disk to adapt it to nicel cooperate with the knife 4 in chipping t e wood, there is provided a pair of adjusting screws 11, 11. These are coupled to the plate 10 at one end by being provided with a head 11% fitting a corresponding slot in the rear or outer edge of the plate 10. These screws 11 are received in part in a screw-threaded opening or groove 12in the upper face of the base 5, and in the un erside of the removable The block 13 lies substantiall in the same plane with the plate 10 and ts the slot or opening which receives the plate 10 at the outer end and is held in place by a screw having a hand wheel 14, by means of which it may be readily removed or replaced. For clamping and holding the plate 10 down firmly on its base, there is provided on the underside of the spout a sliding bar 1.5 mounted in keepers, as shown, to slide freely, the lower end of which bar presses on the top of the plate 10, as shown in Fig. 3. For locking the bar 15 there is provided a cam or eccentric 16, theperiphery of which rests on the upper end of the bar 15 and'which is pivoted at 17 on the spout. The eccentric 16 will preferably have a set screw 18 bearing against the underside of the spout. .By tightening this set screw the eccentric will be held against rotation. The working edge of the late 10 adjacent to the kniferequires to be s arpened or ground frequently and it will be noted that the same may be removed with facility by loosening the eccentric 16 with the )ush bar 15, removing the bolt 14 and the b ock 13, and drawing the plate out by means of the bolts 11 after they have been slightly raised out of the threaded grooves. After sharpening the plate canbe returned to its normal position and the screws 11 replaced and the block 13 secured in position; then by means of turning the screws 11 the plate can be nicely adjusted to lock 13.

cured y the clamp consisting bar 15 and the eccentric 16.

its pro er position, after which it will be seof the push Itwill be noted that the cutter plate 10 is 5. plain and without slot or opening except in 10 by Letters Patent is: A f

The combination in a chippfin machine of a revoluble disk presenting a'p ain circular face, a cutter projecting from the face, a fixed feeds outarranged' on; an'incline and 15 opening against the disk face, a slotted bed at the lower delivery end of the spout, a cutter plate mounted on the bed in the slot, a cutter plate adjusting device detachably and removably mounted on the bed in the outer end of the slot, and a clam engaging on the top of the cutter plate and holding it to the bed, substantially as set forth.

l Witnesses: A. F. WARDELL,

C. W. MoW LLIAMs.

In witness whereof, I have affixed my si 

